RESEARCH TRIANGLE PARK, N.C.--(BUSINESS WIRE)--Quintiles is the preferred Phase I service provider and most frequently cited as the leading provider for complex studies, according to 119 pharmaceutical and biotechnology professionals surveyed in Industry Standard Research’s (ISR) 2013 Phase I Study Trends and Market Outlook Report. This announcement comes on the heels of Quintiles’ recognition as the industry leader and highest in service quality in Phase II/III clinical research in a separate ISR report released in May.